Ammonia-alcohol co-production method capable of realizing low carbon emission through combination of photocatalysis and coal gas

A technology of photocatalysis and carbon emission, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, and preparation of organic compounds, etc., can solve problems such as the reduction of carbon element utilization rate, reduce the emission of three wastes, reduce operating costs, and simplify production The effect of the process

Pending Publication Date: 2021-12-31
HUALU ENG & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At the same time, due to the existence of shift reaction, most of the carbon elements in coal are transferred to carbon dioxide, resulting in a decrease in the utilization rate of carbon elements. Carbon is required and its carbon utilization is 0%

Method used

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  • Ammonia-alcohol co-production method capable of realizing low carbon emission through combination of photocatalysis and coal gas

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Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0025] Such as figure 1 As shown, the hydrogen and oxygen produced by the photocatalytic device are sent to the hydrogen storage tank and the oxygen storage tank respectively. After the oxygen is pressurized, it is mixed with the oxygen from the air separation device and sent to the coal gasification device to react with coal to obtain crude synthesis gas. (The composition is CO:15~35%, H 2 : 10~25%, CO 2 : 5~12%, H 2 O: 40-60%, a small amount of H 2 S, N ...

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Abstract

The invention relates to the field of carbon neutralization energy conservation and emission reduction, and particularly discloses an ammonia-alcohol co-production method for realizing low-carbon emission through combination of photocatalysis and coal gas. A process device for implementing the method comprises a photocatalytic hydrogen production device, an air separation device, a coal gasification device, a purification device, a methanol synthesis device, an ammonia synthesis device and a urea device. According to the invention, through comprehensive utilization of photocatalytic hydrogen production, green production of hydrogen is realized. The method is coupled with the traditional coal chemical industry production process, and a conversion device is canceled, so that a large amount of carbon emission caused by hydrogen production is avoided, the utilization rate of carbon elements in coal is improved, and low-carbon production of the coal chemical industry is realized.

Description

technical field [0001] The invention belongs to a low-carbon emission, green and environment-friendly method for preparing methanol, synthetic ammonia and urea, and specifically relates to an ammonia-alcohol coproduction method that realizes low-carbon emission by combining photocatalysis and coal-to-gas. Background technique [0002] At present, in the face of increasingly severe environmental pressure and the constraints and expectations of the international community on China's greenhouse gas emissions, my country has made a series of commitments and plans for carbon emissions: my country's carbon dioxide emissions will strive to reach the peak before 2030, and strive to reach the peak before 2060. achieve carbon neutrality years ago. In 2020, my country's total domestic carbon dioxide emissions will be 12 billion tons. According to my country's "carbon peak" and "carbon neutral" target requirements, my country's total carbon emissions must be controlled at 3 billion tons ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/151C07C31/04C07C273/04C01C1/04
CPCC07C29/151C07C273/04C01C1/04C07C31/04Y02E50/10Y02P20/50Y02P20/141
Inventor 赵卓雅张镇李陆星贺鑫平陈斌骆彩萍于清周敬林刘艳军张佳
Owner HUALU ENG & TECH
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